Silicon periodic of the system third period fourth serial number 14 in the group header with located, p -elements to his family enters

Silicon periodic of the system third period fourth serial number 14 in the group header with located , p -elements to his family enters .

relative atomic mass is 28,086 ha teng . External electron on the stage four electron holds .

Periodic in the system silicon electrons easy transmitter and electrons easy acceptance seeker elements between located .

Own silicon in compounds (SiH 4 ) four valence show does .

Of atoms relatively close electromagnetism has that they are resulting in a Si – H bond kam polarity ,

molecule polarity fifth , sixth , seventh groups subgroups _ from the elements different as of silicon hydrogenated accumulation acidic or grounded properties show not to cause will be .

In nature spread and biological importance _

Earth in the shell spread in terms of from oxygen next second in place standing of silicon mass share 27.6 % formed reaches _
silicon

Silicon compounds

• SiO 2- sandstone
• Al 2 O 3 * SiO 2 * 2H 2 O- kaolin
• K 2 O * Al 2 O 3 * 6SiO 2 - field shpati

Na 2 O • Al 2 O 3 • 6SiO 2 ( albit );

CaO • Al 2 O 3 • 2SiO 2 ( anortite );

3MgO • 2SiO 2 • 2H 2 O ( serpentine );

3MgO • 4SiO 2 • H 2 O (talk)

Most rocks ( gneisses , granites , basalts ) and _ minerals ( quartz , field feldspar , sand , clay ) silicon compounds formed found

gneisses
granites
basalts

Silicon some plants poya and leaves , bird feathers and animal wool content enters .

Receipt and be used .

Silicon (IV) - oxide magnesium , aluminum or carbon with back silicon _ taken :
SiO 2 + 2Mg = 2MgO + Si SiO 2 + 2C = 2CO + Si

Silicon many alloys taking used . 4% silicon holding steel easy magnetization feature has become remains .

From him transformers , motors , generators ( electrical steel ) .

transformer
generator

Crystal in the case of clean silicon radio- and in electrical engineering half conductor as used . They are The sun nurini electric energy converts _

Silicon the sun batteries space devices energy source as applied .

new subject strengthen test questions for is done

• 1. Silicon periodic in the system place ? A) 14, b) 28, c) 6
• 2. K atomic atomic structure ?
• a) 1s 2 2s 2 2p 6 3s 2 3p 2 b) 1s 2 2s 2 2p 6 3s 2 3p 3 c) 1s 2 2s 2 2p 6 3s 2 3p 4
• 3. Silicon in nature how in appearances occurs ?
• quartz , field feldspar , sand , clay b ) rocks _ and minerals , c) all right